Currently AnyService (and its derivative, providing REST services for users, groups and any objects) defines the update method as follows:
where MOD extends AnyMod.
The idea is to move to a definition like as follows:
e.g. to more REST-compliant patch-based update.
It could also be useful to add a second update method as follows:
where TO extends AnyTO.
This latter would allow to build simpler create / update interactions for clients based on syncope-client Java library.